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/*
Copyright (c) 2007-2013 Contributors as noted in the AUTHORS file
This file is part of 0MQ.
0MQ is free software; you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
0MQ is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef __ZMQ_OBJECT_HPP_INCLUDED__
#define __ZMQ_OBJECT_HPP_INCLUDED__
#include "stdint.hpp"
namespace zmq
{
struct i_engine;
struct endpoint_t;
struct pending_connection_t;
struct command_t;
class ctx_t;
class pipe_t;
class socket_base_t;
class session_base_t;
class io_thread_t;
class own_t;
// Base class for all objects that participate in inter-thread
// communication.
class object_t
{
public:
object_t (zmq::ctx_t *ctx_, uint32_t tid_);
object_t (object_t *parent_);
virtual ~object_t ();
uint32_t get_tid ();
void set_tid(uint32_t id);
ctx_t *get_ctx ();
void process_command (zmq::command_t &cmd_);
void send_inproc_connected (zmq::socket_base_t *socket_);
void send_bind (zmq::own_t *destination_, zmq::pipe_t *pipe_, bool inc_seqnum_ = true);
protected:
// Using following function, socket is able to access global
// repository of inproc endpoints.
int register_endpoint (const char *addr_, zmq::endpoint_t &endpoint_);
void unregister_endpoints (zmq::socket_base_t *socket_);
zmq::endpoint_t find_endpoint (const char *addr_);
void pend_connection (const char *addr_, pending_connection_t &pending_connection_);
void connect_pending (const char *addr_, zmq::socket_base_t *bind_socket_);
void destroy_socket (zmq::socket_base_t *socket_);
// Logs an message.
void log (const char *format_, ...);
// Chooses least loaded I/O thread.
zmq::io_thread_t *choose_io_thread (uint64_t affinity_);
// Derived object can use these functions to send commands
// to other objects.
void send_stop ();
void send_plug (zmq::own_t *destination_,
bool inc_seqnum_ = true);
void send_own (zmq::own_t *destination_,
zmq::own_t *object_);
void send_attach (zmq::session_base_t *destination_,
zmq::i_engine *engine_, bool inc_seqnum_ = true);
void send_activate_read (zmq::pipe_t *destination_);
void send_activate_write (zmq::pipe_t *destination_,
uint64_t msgs_read_);
void send_hiccup (zmq::pipe_t *destination_, void *pipe_);
void send_pipe_term (zmq::pipe_t *destination_);
void send_pipe_term_ack (zmq::pipe_t *destination_);
void send_term_req (zmq::own_t *destination_,
zmq::own_t *object_);
void send_term (zmq::own_t *destination_, int linger_);
void send_term_ack (zmq::own_t *destination_);
void send_reap (zmq::socket_base_t *socket_);
void send_reaped ();
void send_done ();
// These handlers can be overloaded by the derived objects. They are
// called when command arrives from another thread.
virtual void process_stop ();
virtual void process_plug ();
virtual void process_own (zmq::own_t *object_);
virtual void process_attach (zmq::i_engine *engine_);
virtual void process_bind (zmq::pipe_t *pipe_);
virtual void process_activate_read ();
virtual void process_activate_write (uint64_t msgs_read_);
virtual void process_hiccup (void *pipe_);
virtual void process_pipe_term ();
virtual void process_pipe_term_ack ();
virtual void process_term_req (zmq::own_t *object_);
virtual void process_term (int linger_);
virtual void process_term_ack ();
virtual void process_reap (zmq::socket_base_t *socket_);
virtual void process_reaped ();
// Special handler called after a command that requires a seqnum
// was processed. The implementation should catch up with its counter
// of processed commands here.
virtual void process_seqnum ();
private:
// Context provides access to the global state.
zmq::ctx_t *ctx;
// Thread ID of the thread the object belongs to.
uint32_t tid;
void send_command (command_t &cmd_);
object_t (const object_t&);
const object_t &operator = (const object_t&);
};
}
#endif
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